Holly Willoughby joins as a guest on ITV’s "You Bet!" but won't co-host due to scheduling conflicts.

Holly Willoughby will appear as a guest on ITV's "You Bet!" but won't co-host the new series with Stephen Mulhern. Mulhern will host solo, with a changing lineup of celebrity guests including Willoughby, Rylan Clark, and Zoe Ball. The show is expanding with a tour across the UK, featuring bigger and bolder challenges. Willoughby left the hosting role due to scheduling conflicts.